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Finding the Fourth Proportional to 1,165.26, 1,608.28 and 668.22

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Solution

The fourth proportional to 1,165.26, 1,608.28 and 668.22 is: 922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.26 : 1,608.28 = 668.22 : x
  2. Step 2: Convert to fraction form
    1,165.26/1,608.28 = 668.22/x
  3. Step 3: Cross multiply
    1,165.26x = 1,608.28 × 668.22
  4. Step 4: Simplify right side
    1,165.26x = 1,074,692.61
  5. Step 5: Solve for x
    x = 1,074,692.61/1,165.26
  6. Step 6: Final answer
    x = 922.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.